In the end, the Human has just +1 Ref, since the Eladrin can have a higher CON.I’d go for the Demigod epic destiny, since I feel that’s the only one worthwhile, and I like stat boosts. They would go to INT (duh) and probably WIS.

I’ll take Staff as an implement, for the AC boost, but later on add Orb, for the penalty on enemy saves. Plan is to let the Longsword count as Orb, and wield one of those PHBIII staffs that grant a to-hit bonus.

My two at-wills will be Fire Burst & Thunderwave.

On to feats. In no particular order, on the Heroic tier: Improved Initiative (later on Superior), Toughness, Astral Fire, Astral Fire for Thunder & Lightning, either Leather Armour or Unarmoured Agility (leaning to this), the feat that gives +1 to all defenses, upgrading it later to the +2 & +3 version, Versatile Expertise (Longsword and Staff), feat to use special Staff from PHBIII.Paragon: Second Implement, Evasion, Mettle, Arcane Reach, Combat Anticipation, that PHBI feat that gives +2 to a defense when using a Thunder power, Spell Focus.Epic: War Wizardry, the PHBI feat that reduces enemy fire resistance by 20, the “Improved Critical for Arcane Powers” feat from Arcane Power book.